Air Curtain Dust Removal Device Design and Dust Prevention Strategy in Heading Face

Figure 5

Injection box structure of air curtain forcing device. (1) Bottom plate; (2) support piece; (3) forcing cavity fixed plate; (4) movable injection cavity top plate; (5) adjusting nut; (6) air guide piece; (7) injection cavity; (8) rotary support shaft; (9) air duct; (10) injection nozzle; (11) air guide blade adjustment shaft; (12) air supply nozzle.

(a)

(b)